body {
	background-color: aliceblue;
	color: bisque;
}

#tupian {
	background-image: url(../imags/a.png);
	background-size: 100% 100%;
	width: 100px;
	height: 100px;
	transform: rotate(45deg);
    box-shadow: 1px 1px 0 rgb(0, 0, 0, .25);
}
.asdqwe{
	color: red;
}